MLS Laser Therapy

There are many types of lasers.  Each laser has different characteristics which produce a different effect.  These characteristics include:

  • Energy: measured in joules
  • Time: Defined as the duration of irradiance of target tissue and is measured in seconds.  It is also known as Impulse Duration or called “impulse width”.
  • Wavelength: Penetration depth is directed by the laser emission wavelength and the type of tissue (chromophores).
  • Frequency: Defined as the number of impulses emitted during the unit of time (1 second) and should reflect the condition treated.
  • Power: the rate at which energy is delivered and is measured in watts.
  • Fluence: Energy Density or Dose
  • Irradiance (Also known as Power Density): Power delivered per unit area
  • Emission Mode: Continuous Wave (CW) or Pulsed Wave (PW)
  • Impulse Duration: Duration of laser emission, also called “impulse width”.

Laser therapy uses light to favor and accelerate the body’s natural healing processes. The laser beam is moved over the skin so that the light energy (photons) penetrates the tissue where it interacts with various molecules (chromophores) that cause different biological effects. It produces a photochemical, photothermal and photomechanical effect.

The energy from laser light interacts with tissue, generating biological effects:

Primary Biological Effects

Photochemical Effect

Direct transfer of energy to the biological sublayers (endogenous or exogenic chromophores).

  • Enzymatic activation
  • Increase in ATP production
  • Modulation of cellular metabolism
  • Effect on pain perception threshold

Photothermal Effect

Photothermic interaction is based on the conversion of option radiation into thermal energy which, at a microscopic level, occurs through the inelastic encounter between excited molecules following the absorption of photons.

  • Increase in circulation
  • Increased supply of oxygen and nutrients

Photomechanical Effect

The absorption of energy involves the formation of mechanical waves.

  • Production of an extracellular matrix (important in tissue repair & regeneration)
  • Acceleration of lymphatic peristalsis
  • Re-absorption of edemas
  • Reactivation of microcirculation

Effects on Cells

  • Increase in ATP synthesis
  • Increase in the production of RNA
  • Increase in cellular proliferation
  • Induction of differentiation processes
  • Release of growth factors (fibroblasts) and other substances
  • Increase in the production of molecules of the extracellular matrix (fibroblasts & condrocytes)

Effects on Tissue

  • Modulation of the inflammatory processes
  • Remodeling of the extracellular matrix
  • Induction of lymphatic and vascular regeneration
  • Stimulation of the endothelial function
  • Reduction of the edema re-absorption times
  • Prevention against the formation of scar tissue and hyperkeratosic lesions

Systemic Effects

Analgesic effect:

  • Blocking of pain stimulus conduction
  • Hyperemia and “wash out” of the algogenic substances
  • Increase in endorphin synthesis
  • Pain threshold modulation

Anti-inflammatory and anti-edema effect:

  • Increase in the caliber and modulation of lymphatic and capillary vessel permeability
  • Hyperemia and “wash out” of the pro-inflammatory molecules

Biostimulating effect:

  • Increase in the supply of nutrients, oxygen and growth factors
  • Cellular function activation
  • Modulation of cell proliferation and differentiation (e.g., nerve regeneration)
  • Increase of matrix protein synthesis
  • Reduction of scar tissue formation

Low Level Laser Therapy (LLLT) Class 3B

These lasers use very low power, are limited to surface biostimulation, and often require many treatment sessions and long treatment times.  Results are only achieved at the end of the treatment cycle, and results are limited because of the use of only one or two wavelengths that are not synchronized.

High Power (HP) Class IV

These lasers were developed with the expectation that greater power corresponded to better efficiency.  On the contrary, unless suitably controlled, high power can thermally damage the treated tissue.  Therefore, the majority of high power lasers cannot operate at their maximum power without causing damage.

Multiwave Locked System (MLS) Class IV

MLS Laser Therapy is a patented emission system created to achieve an efficient and simultaneous effect on pain, contracture, inflammation, and edema within a short period of time.  The patented control system that generates the MLS pulse synchronizes the emissions to achieve optimum results.  Due to this characteristic synchronization, the various therapeutic effects not only take place at the same time, but reciprocally reinforce each other, without the risk of thermal damage.